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Mathematics 9 Online
OpenStudy (anonymous):

find the domain of the function: sqrt(15x^2+x-2)

hero (hero):

15x^2 +x - 2 > 0 15x^2+6x-5x - 2 >0 3x(5x+2)-1(5x+2) >0 (5x+2)(3x-1) > 0

hero (hero):

You have to find the values, then test out the points to find which values work.

hero (hero):

|dw:1327879739913:dw|

hero (hero):

Are you going to try it out?

Directrix (directrix):

I'm thinking that the domain is the following: x </= -2/5 OR x >/= 1/3.

hero (hero):

^ Who is this guy

hero (hero):

Directrix, I wasn't done posting the solution.

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